וְהִזָּ֤ה הַטָּהֹר֙ עַל־הַטָּמֵ֔א בַּיּ֥וֹם הַשְּׁלִישִׁ֖י וּבַיּ֣וֹם הַשְּׁבִיעִ֑י וְחִטְּאוֹ֙ בַּיּ֣וֹם הַשְּׁבִיעִ֔י וְכִבֶּ֧ס בְּגָדָ֛יו וְרָחַ֥ץ בַּמַּ֖יִם וְטָהֵ֥ר בָּעָֽרֶב׃
그 정한 자가 제삼일과 제칠일에 그 부정한 자에게 뿌려서 제칠일에 그를 정결케 할 것이며 그는 자기 옷을 빨고 물로 몸을 씻을 것이라 저녁이면 정하리라
Rashi
His sprinkling is invalid - since we require intent for purification, as is written: "The pure person shall sprinkle it upon the impure person" [Numbers 19:19] -- that he have intention [to sprinkle] upon him.
German Commentary
sondern nur für die Toten-Unreinheit. Die eine sieben Tage währende Zeit bis zum Reinwerden bedürfen (Num. 19, 19). Da man also oft nicht so lange warten will, so wird man lieber die Metallgeräte löchern und dann wieder herstellen, um sie sofort rein zu haben. Dadurch würde die Thora-Vorschrift von der Reinigung durch Entsündigungswasser (מי חטאת, Num. 19, 9) in Vergessenheit geraten.
English Explanation of Mishnah Moed Katan
Zavim and zavot, menstruants, and women who have given birth, and anyone going from a state of purity to impurity, are permitted [to launder their clothes]. This section refers to various people who have some sort of genital emission and therefore need to wash their clothes frequently. Zavim and zavot have some sort of unusual genital emission which would dirty their clothes. They are allowed to wash their clothes because it would not be seemly to force them to go around in public with stained clothing. People who become pure on the festival need to wash their clothes (Leviticus 11:25, 28; 14: 5, 47; Numbers 19:19). They are allowed to do so during the festival since they could not control the timing of their becoming pure.